A284340 Number of 7 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

64, 1689, 122495, 14581112, 1544903012, 179138039472, 20513380740103, 2451428833201600, 290448052609643641, 35231200322704249292, 4253729721779461810333, 520640922794348063107735

Offset

1,1

Comments

Row 7 of A284334.

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

Example

Some solutions for n=3
..0..1..1. .0..1..0. .0..1..1. .0..0..0. .0..0..0. .0..0..1. .0..1..1
..0..0..0. .1..1..0. .1..0..0. .0..0..0. .1..0..0. .0..0..1. .0..0..0
..1..1..1. .1..0..0. .0..1..1. .0..1..1. .0..0..1. .1..1..1. .1..1..0
..0..1..1. .1..0..1. .0..1..0. .0..1..0. .0..1..1. .0..0..1. .1..0..0
..0..0..1. .0..0..0. .1..0..1. .1..1..1. .1..0..1. .0..1..0. .1..1..0
..0..0..1. .1..1..1. .0..0..0. .0..0..0. .0..0..1. .1..1..1. .1..1..1
..0..0..0. .1..1..1. .1..0..0. .1..1..1. .0..1..1. .0..1..0. .0..1..1

Crossrefs

Cf. A284334.

Sequence in context: A232427 A194496 A297092 * A195807 A304309 A316208

Adjacent sequences: A284337 A284338 A284339 * A284341 A284342 A284343

Keyword

nonn

Author

R. H. Hardin, Mar 25 2017

Status

approved